My First Java Application
@Chillivanilli is my inspiration :prettiness:
This is my first project :shout:
http://i.imgur.com/UbMcJdM.png
Download : SimpleCalculator
Source Code
Main.java
Code:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Ebina
*/
public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
CalculatorForm form = new CalculatorForm();
form.setVisible(true);
}
}
CalculatorForm.java
Code:
import javax.swing.JOptionPane;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Ebina
*/
public class CalculatorForm extends javax.swing.JFrame {
/**
* Creates new form CalculatorForm
*/
public CalculatorForm() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
FirstNumberText = new javax.swing.JTextField();
SecondNumberText = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
PlusButton = new javax.swing.JButton();
MinusButton = new javax.swing.JButton();
AnswerLabel = new javax.swing.JLabel();
MultiButton = new javax.swing.JButton();
DivideButton = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Simple Calculator by Einhver A2S.in");
SecondNumberText.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
SecondNumberTextActionPerformed(evt);
}
});
jLabel1.setText("First number");
jLabel2.setText("Second number");
PlusButton.setText("+");
PlusButton.setToolTipText("Plus");
PlusButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
PlusButtonActionPerformed(evt);
}
});
MinusButton.setText("-");
MinusButton.setToolTipText("Minus");
MinusButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
MinusButtonActionPerformed(evt);
}
});
AnswerLabel.setText("Answer is :");
MultiButton.setText("*");
MultiButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
MultiButtonActionPerformed(evt);
}
});
DivideButton.setText("/");
DivideButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
DivideButtonActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(AnswerLabel)
.addGroup(layout.createSequentialGroup()
.addComponent(PlusButton)
.addGap(18, 18, 18)
.addComponent(MinusButton)
.addGap(18, 18, 18)
.addComponent(MultiButton)
.addGap(18, 18, 18)
.addComponent(DivideButton))
.addComponent(jLabel2)
.addComponent(jLabel1))
.addGap(0, 144, Short.MAX_VALUE))
.addComponent(FirstNumberText, javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(SecondNumberText))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(FirstNumberText, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(24, 24, 24)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(SecondNumberText, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(37, 37, 37)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(PlusButton)
.addComponent(MinusButton)
.addComponent(MultiButton)
.addComponent(DivideButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 54, Short.MAX_VALUE)
.addComponent(AnswerLabel)
.addGap(52, 52, 52))
);
jLabel2.getAccessibleContext().setAccessibleDescription("");
pack();
}// </editor-fold>
private void SecondNumberTextActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void PlusButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int number1, number2;
try {
number1 = Integer.parseInt(
this.FirstNumberText.getText());
}
catch (Exception e) {
JOptionPane.showMessageDialog(this, "Bad first number!", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
try {
number2 = Integer.parseInt(
this.SecondNumberText.getText());
}
catch (Exception e) {
JOptionPane.showMessageDialog(this, "Bad second number!", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
int answer = number1 + number2;
this.AnswerLabel.setText(
"Answer is : "+ answer);
}
private void MinusButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int number1, number2;
try {
number1 = Integer.parseInt(
this.FirstNumberText.getText());
} catch (Exception e) {
JOptionPane.showMessageDialog(this, "Bad first number!", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
try {
number2 = Integer.parseInt(
this.SecondNumberText.getText());
} catch (Exception e) {
JOptionPane.showMessageDialog(this, "Bad second number!", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
int answer = number1 - number2;
this.AnswerLabel.setText(
"Answer is : " + answer);
}
private void MultiButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int number1, number2;
try {
number1 = Integer.parseInt(
this.FirstNumberText.getText());
}
catch (Exception e) {
JOptionPane.showMessageDialog(this, "Bad first number!", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
try {
number2 = Integer.parseInt(
this.SecondNumberText.getText());
}
catch (Exception e) {
JOptionPane.showMessageDialog(this, "Bad second number!", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
int answer = number1 * number2;
this.AnswerLabel.setText(
"Answer is : "+ answer);
}
private void DivideButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int number1, number2;
try {
number1 = Integer.parseInt(
this.FirstNumberText.getText());
}
catch (Exception e) {
JOptionPane.showMessageDialog(this, "Bad first number!", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
try {
number2 = Integer.parseInt(
this.SecondNumberText.getText());
}
catch (Exception e) {
JOptionPane.showMessageDialog(this, "Bad second number!", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
int answer = number1 / number2;
this.AnswerLabel.setText(
"Answer is : "+ answer);
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(CalculatorForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(CalculatorForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(CalculatorForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(CalculatorForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new CalculatorForm().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel AnswerLabel;
private javax.swing.JButton DivideButton;
private javax.swing.JTextField FirstNumberText;
private javax.swing.JButton MinusButton;
private javax.swing.JButton MultiButton;
private javax.swing.JButton PlusButton;
private javax.swing.JTextField SecondNumberText;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
// End of variables declaration
}
